You can try this. Change the timeout of the socket as required in your scenario! This code will send a message and then wait to receive messages until the timeout is reached!
DatagramSocket s;
try {
s = new DatagramSocket();
byte[] buf = new byte[1000];
DatagramPacket dp = new DatagramPacket(buf, buf.length);
InetAddress hostAddress = InetAddress.getByName("localhost");
String outString = "Say hi"; // message to send
buf = outString.getBytes();
DatagramPacket out = new DatagramPacket(buf, buf.length, hostAddress, 9999);
s.send(out); // send to the server
s.setSoTimeout(1000); // set the timeout in millisecounds.
while(true){ // recieve data until timeout
try {
s.receive(dp);
String rcvd = "rcvd?from?" + dp.getAddress() + ", " + dp.getPort() + ":?"+ new String(dp.getData(), 0, dp.getLength());
System.out.println(rcvd);
}
catch (SocketTimeoutException e) {
// timeout exception.
System.out.println("Timeout reached!!! " + e);
s.close();
}
}
} catch (SocketException e1) {
// TODO Auto-generated catch block
//e1.printStackTrace();
System.out.println("Socket closed " + e1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…